Quick if file exist question...

elbombillo · #1 (**permalink**) 11-30-2008

What does the "!" do in the second statement? Is kinda strange but sometimes one or the other works.

rsakey="~/.ssh/id_rsa.pub"

if [ -f $rsakey ];then
if [! -f $rsakey ];then

vino · #2 (**permalink**) 11-30-2008

Quote:

Originally Posted by elbombillo

What does the "!" do in the second statement? Is kinda strange but sometimes one or the other works.

rsakey="~/.ssh/id_rsa.pub"

if [ -f $rsakey ];then
if [! -f $rsakey ];then

-f checks for file existence. The ! represents the NOT operator. Therefore you can read 'if [ ! -f $rsakey ] ; then' as 'if rsakey does not exist'

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